Well-drill machine.



. R. ANTHONY.

WELL DRILL MACHINE.

APPLICATION FILED 1330.12, 1908.

945,437. Patented Jan. 4, 1910.

mcazw. a. GRAHAM m. Fmwm'uoommins. WASHINGTON. n. c.

T FFTQE.

,RUSSELL ANTHONY, OF SAN ANGELO TEXAS.

WELL-DRILL MACHINE.

- Specification of Letters Patent.

Patented Jan. 4., 1910.

Application filed December 12, 1908. Serial No. 467,209.

To all whom it may concern:

Be it known that I, RUSSELL ANTHONY, a citizen of the United States,residlng at San Angelo, in the county of Tom Green and State of Texas,have invented a new and useful Nell-Drill Machine, of which thefollowing is a specification.

The present invention relates more particularly to the mechanism wherebya drilling tool is alternately raised and dropped, and has for itsobject to provide an improved mechanism of this kind characterized bysimplicity of construction and efficiency of operation.

A further object of the invention is to provide an operating mechanismwhereby the drill-rope is held taut, and a quick return is had.

The invention also has for its object an improved feed mechanism,together with other novel features of construction, as will appear morefully hereinafter.

In the accompanying drawings Figure 1 is a plan view of the invention.Fig. 2 is a longitudinal sectional view thereof. Fig. 3 is a transversesection on the line 33 on Fig. at is a transverse section on the line ofFig. 1.

In the drawings, 5 denotes a pair of sills on which the mechanism issupported. On these sills are bearings 6 for a transverse shaft 7 onwhich is mounted a loose pulley 8, driven from any suitable source ofpower. To the shaft 7 is keyed or otherwise secured so as to turntherewith, a ratchet-wheel 9 which is engageable by a spring-pressedpawl 10 pivotally mounted on the pulley 8, whereby the rotation of thelatter is communicated to the shaft.

At 11 is indicated a drum on which the drill-rope 12 is wound, said drumbeing secured to the shaft by keys or otherwise so as to turn therewith.

The shaft 7 is adapted to be rotated in one direction by thepawl-and-ratchet mechanism herein described, to wind up the drillropeand thus elevate the drilling tool. The dropping of the tool isaccomplished by tripping the pawl 10 and thus releasing the shaft 7,whereupon the drill-rope unwinds, and the drilling tool drops bygravity. The pawl is tripped by a pin 13 projecting from the adjacentsill 5 into the path of the tail of the pawl which it strikes once everyrevolution of the pulley S and thereby disengages the pawl from theratchet, thus releasing the shaft as stated.

The feed mechanism comprises the following instrumentalities: On theshaft 7 is loosely mounted a disk 14 formed with spur teeth 15 andhaving onone side thereof a rim 16 for a band-brake 17. On that face ofthe disk from which the rim projects, is a laterally projectingstop-block 18 which extends intothe path of and is engageable by an arm19, projecting from a hub 20, keyed or otherwise secured to the shaft 7so as to turn therewith. site this arm is another arm 21 which alsoprojects outwardly from the hub. On the face of the disk 14: are buffers22 and 23 respectively, which are engageable by the arms 19 and 21, andserve to cushion the blow thereof. Each buffer comprises a head formedon a stem 24; which is slidably mounted in a slot 25 formed in a block26 secured to the disk, and passing through an opening in a cross-bar 27extending between said slot. Behind the cross-bar, the stem has a head28 to prevent withdrawal. Around the stem, between the cross-bar 27 andthe buffer head, is coiled a spring 29 which is compressed when thebuffer is operated. The head 28 limits the inward movement of the stemby striking the inner end of the slot, and thus serves as a stop.

Then the drilling tool is being alternately raised and dropped asheretofore stated, the disk 14 is stationary. and the arm 19 swings backand forth between the block 18 and the bufi'er 22. The arm 21 swingstoward and from the buffer 23. If the drill rope unwinds sufficiently tocause the arms to strike the buffer, the shock will be taken up thereby.To feed the drilling tool, the disk 14 is turned in the direction of thearrow in Fig. 3, whereupon the block 18 comes into engagement with thearm 19, and turns the shaft 7 in a direction to pay out the drillrope.Any suitable form of gearing (not shown) may be employed for operatingthe feed disk. The band-brake 17 engaging the rim1 16 controls thedescent of the drilling too The mechanism herein described is simple instructure and effectually serves the purpose for which it is designed,there being no complicated parts to get out of order. The

Diametrically oppo-' drill-rope Works tight, and a quick return is had.Only one rope is required to operate the drilling tool and the slushbucket.

Vfhat I claim is:

1. In a Well-drilling machine, a shaft, a drum made fast thereon onwhich the drillrope is Wound, a loose pulley on the shaft, means forperiodically coupling said pulley to the shaft, a feed disk loose on theshaft and having a stop-projection, and an arm fast on the shaft andprojecting into the path of the stop-projection.

2. In a Well-drilling machine, a shaft, a drum made fast thereon onWhich the drillrope is wound, a loose pulley on the shaft, means forperiodically coupling said pulley to the shaft, a feed disk loose on theshaft, a stop-projection and a buffer on the disk, and an arm fast onthe shaft and extending between the stop projection and the buffer.

In testimony that I claim the foregoing as my oWn, I have hereto aflixedmy signature in the presence of two Witnesses.

RUSSELL ANTHONY.

Witnesses GEORGE W. BEAMS, LEE C. SPRINGER.

